EP0869935B1 - Pyrotechnical charge for detonators - Google Patents
Pyrotechnical charge for detonators Download PDFInfo
- Publication number
- EP0869935B1 EP0869935B1 EP96943430A EP96943430A EP0869935B1 EP 0869935 B1 EP0869935 B1 EP 0869935B1 EP 96943430 A EP96943430 A EP 96943430A EP 96943430 A EP96943430 A EP 96943430A EP 0869935 B1 EP0869935 B1 EP 0869935B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- charge
- detonator according
- metal
- weight
- secondary explosive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C7/00—Non-electric detonators; Blasting caps; Primers
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
Abstract
Description
Claims (39)
- A detonator comprising a shell with a base charge comprising secondary explosive at one end thereof, igniting means arranged at the opposite end thereof and an intermediate pyrotechnical train converting an ignition pulse from the igniting means to the base charge to detonate the same, the pyrotechnical train comprising an ignition charge comprising a metal fuel selected from groups 2, 4 and 13 of the periodic table and an oxidant in the form of an oxide of a metal selected from periods 4 and 6 of the periodic table, the metal fuel being present in an excess relative to the amount stoichiometrically necessary to reduce the amount of metal oxide oxidant, said ignition charge generating a hot pressurized gas that is able to ignite said secondary explosive of the base charge into a convective deflagrating state to realiably detonate the same.
- A detonator according to claim 1, wherein the metal fuel is at least 0.5, preferably at least 0.75 and more preferably at least 1 volt more elektronegative than the metal of the metal oxide oxidant.
- A detonator according to any one of claims 1 and 2, wherein the metal fuel has been selected from periods 3 and 4 of the Periodic Table.
- A detonator according to claim 3, wherein the metal fuel has been selected from Al and Ti.
- A detonator according to any one of the preceding claims, wherein the metal oxide oxidant comprises a metal selected from Cr, Mn, Fe, Ni, Cu, Zn, Ba, W and Bi.
- A detonator according to claim 5, wherein said metal is selected from Mn, Fe, Cu and Bi.
- A detonator according to claim 6, wherein said metal oxide is selected from NnO2, Fe2O3, Fe3O4, Cu2O, CuO and Bi2O3.
- A detonator according to claim 6, wherein said metal fuel-metal oxide oxidant combination comprises Al in combination with an oxide of Fe, Bi or Cu.
- A detonator according to claim 8, wherein said combination is Al-Fe2O3, Al-Bi2O3 or Al-Cu2O, preferably Al-Fe2O3.
- A detonator according to claim 6, wherein said metal fuel-metal oxide oxidant combination comprises Ti in combination with an oxide of Bi, preferably Ti-Bi2O3.
- A detonator according to any one of the preceding claims, wherein the amount of metal fuel is more than 1 and less than 12, preferably less than 6, more preferably less than 4, the amount stoichiometrically necessary to reduce the amount of metal oxide oxidant.
- A detonator according to claim 11, wherein the amount of metal fuel is between 1.1 and 6 times said stoichiometrically necessary amount.
- A detonator according to claim 12, wherein the amount of metal fuel is between 1.5 and 4 times said stoichiometrically necessary amount.
- A detonator according to any one of the preceding claims, wherein the percentage of metal fuel is 10-50% by weight, preferably 15-35% by weight, more preferably 15-25% by weight, and the percentage of metal oxide oxidant is 90-50% by weight, preferably 85-65% by weight, more preferably 75-65% by weight, said percentages being based on the ignition charge composition.
- A detonator according to claim 14, wherein the metal fuel is Al and the metal oxide oxidant is Cu2O or Bi2O3, the percentage of said fuel being 15-35% by weight and the percentage of said oxidant being 65-85% by weight.
- A detonator according to claim 14, wherein the metal fuel is Ti and the metal oxide oxidant is Bi2O3, the percentage of said fuel being 15-25% by weight, preferably around 20% by weight, and the percentage of said oxidant being 75-85% by weight, preferably around 80% by weight.
- A detonator according to any one of the preceding claims, wherein said ignition charge has such a composition that the burning speed thereof is between 0.001 and 50 m/sec, preferably between 0.005 and 10 m/sec.
- A detonator according to any one of the preceding claims, wherein said ignition charge has such a composition that it has an ideal burning temperature exceeding 2000 degrees Kelvin.
- A detonator according to claim 18, wherein said ignition charge has such a composition that the actual burning temperature thereof exceeds 70% of the ideal burning temperature.
- A detonator according to any one of the preceding claims, wherein said ignition charge contains a solid component additive in the form of a metal and/or an oxide.
- A detonator according to claim 20, wherein said additive is present in an amount of 2-30% by weight, preferably 4-20% by weight, more preferably 5-15% by weight, such as 6-10% by weight, based on the weight of said ignition charge.
- A detonator according to any one of claims 20 and 21, wherein said additive is a compound which is also a product of the reaction between metal fuel and metal oxide oxidant.
- A detonator according to any one of claims 20 and 21, wherein said additive is a particulate metal.
- A detonator according to claim 23, wherein said metal is solid at the reaction temperature of the ignition charge.
- A detonator according to any one of claims 20-22, wherein said oxide is selected from oxides of Al, Si, Zn, Fe, Ti and mixtures thereof.
- A detonator according to claim 25, wherein said oxide is an aluminium oxide, a silicon oxide or a mixture thereof.
- A detonator according to claim 25, wherein said oxide is an iron oxide, especially Fe2O3.
- A detonator according to any one of claims 20-24, wherein said metal is selected from W, Ti, Ni and mixtures and alloys thereof.
- A detonator according to claim 28, wherein said metal is W or a mixture or alloy of W with Fe.
- A detonator according to any one of the preceding claims, wherein said ignition charge has been pressed and placed in contact with said secondary explosive.
- A detonator according to claim 30, wherein said charge has been placed in contact with the secondary explosive in a transition section, located in the pyrotechnical train before the base charge, where the secondary explosive is surrounded by a confinement.
- A detonator according to claim 31, wherein also said charge has been positioned in the confinement.
- A detonator according to any one of claims 30-32, wherein the density of the secondary explosive closest to said charge is between 60 and 100 % and preferably between 70 and 99 % of the secondary explosive crystal density.
- A detonator according to any one of claims 30-32 wherein the density of the secondary explosive closest to said charge is between 40 and 90 % and preferably between 50 and 80 % of the secondary explosive crystal density.
- A detonator according to any one of claims 31-34, wherein the secondary explosive in the transition section is a donor charge for propelling an impactor disc towards another secondary explosive to be detonated thereby.
- A detonator according to any one of claims 31-34, wherein the secondary explosive in- the transition charge is a donor charge for propelling an impactor disc through a channel towards another secondary explosive to be detonated thereby.
- A detonator according to any one of claims 31-34, characterized in that the secondary explosive in the transition charge is the first part of a deflagration to detonation transition chain, said chain preferably further comprising a second part containing another secondary explosive of lower density than in said first part.
- A detonator according to any one of the preceding claims, wherein said base charge is secondary explosive only.
- A detonator according to any one of the preceding claims, wherein said secondary explosive is selected from pentaerythritoltetranitrate (PETN), trinitrophenylmethylnitramine (Tetryl) and trinitrotoluene (TNT) and preferably is PETN.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9504571A SE505912C2 (en) | 1995-12-20 | 1995-12-20 | Pyrotechnic charge for detonators |
SE9504571 | 1995-12-20 | ||
PCT/SE1996/001646 WO1997022571A1 (en) | 1995-12-20 | 1996-12-12 | Pyrotechnical charge for detonators |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0869935A1 EP0869935A1 (en) | 1998-10-14 |
EP0869935B1 true EP0869935B1 (en) | 2001-03-28 |
Family
ID=20400662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96943430A Expired - Lifetime EP0869935B1 (en) | 1995-12-20 | 1996-12-12 | Pyrotechnical charge for detonators |
Country Status (24)
Country | Link |
---|---|
US (1) | US6227116B1 (en) |
EP (1) | EP0869935B1 (en) |
JP (1) | JP4098829B2 (en) |
KR (1) | KR100468638B1 (en) |
AT (1) | ATE200072T1 (en) |
AU (1) | AU699412B2 (en) |
BR (1) | BR9612089A (en) |
CA (1) | CA2240892C (en) |
CZ (1) | CZ292045B6 (en) |
DE (2) | DE869935T1 (en) |
DK (1) | DK0869935T3 (en) |
ES (1) | ES2122952T3 (en) |
GR (1) | GR3035977T3 (en) |
MX (1) | MX9804973A (en) |
NO (1) | NO310285B1 (en) |
PL (1) | PL185595B1 (en) |
PT (1) | PT869935E (en) |
RU (1) | RU2170224C2 (en) |
SE (1) | SE505912C2 (en) |
SK (1) | SK86098A3 (en) |
TW (1) | TW419580B (en) |
UA (1) | UA44925C2 (en) |
WO (1) | WO1997022571A1 (en) |
ZA (1) | ZA9610539B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021234025A1 (en) * | 2020-05-20 | 2021-11-25 | DynaEnergetics Europe GmbH | Low-voltage primary-free detonator |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5945627A (en) * | 1996-09-19 | 1999-08-31 | Ici Canada | Detonators comprising a high energy pyrotechnic |
DE59808071D1 (en) * | 1998-06-29 | 2003-05-28 | Ruag Munition Thun | Pyrotechnic layer for the targeted destruction of machine-readable data on data carriers |
FR2797947B1 (en) * | 1999-08-24 | 2001-11-16 | Francesco Ambrico | PYROTECHNIC DEVICE FOR CONNECTION AND DELAY |
US6578490B1 (en) * | 2000-10-03 | 2003-06-17 | Bradley Jay Francisco | Ignitor apparatus |
US9329011B1 (en) | 2001-02-28 | 2016-05-03 | Orbital Atk, Inc. | High voltage arm/fire device and method |
ITMI20020418A1 (en) * | 2002-03-01 | 2003-09-01 | Fiocchi Munizioni Spa | PRIMING MIXTURE FOR PRIMING CARTRIDGES FOR PORTABLE WEAPONS |
KR100561952B1 (en) * | 2002-09-13 | 2006-03-21 | 주식회사 한화 | Slight-shock blasting composition |
US7546804B1 (en) * | 2006-10-10 | 2009-06-16 | The United States Of America As Represented By The Secretary Of The Army | Artillery charge with laser ignition |
US8051775B2 (en) * | 2008-07-18 | 2011-11-08 | Schlumberger Technology Corporation | Detonation to igniter booster device |
WO2010068957A2 (en) * | 2008-12-09 | 2010-06-17 | African Explosives Limited | Slow burning pyrotechnic delay composition |
AU2011220386A1 (en) * | 2010-02-24 | 2012-08-30 | Ael Mining Services Limited | Detonator initiator |
WO2011112647A1 (en) * | 2010-03-09 | 2011-09-15 | Dyno Nobel Inc. | Sealer elements, detonators containing the same, and methods of making |
FR3010784B1 (en) * | 2013-09-16 | 2017-05-19 | Nexter Munitions | DETONATOR WITH DELAY |
JP6183842B2 (en) * | 2013-09-27 | 2017-08-23 | 株式会社Ihiエアロスペース | Obstacle removal device |
RU2634337C2 (en) * | 2014-07-25 | 2017-10-25 | Глеб Владимирович Локшин | Pyrotechnic product |
DE102015014821A1 (en) | 2015-11-18 | 2017-05-18 | Rheinmetall Waffe Munition Gmbh | REACh-compliant pyrotechnic delay and ignition charge with variably adjustable performance parameters |
US10927627B2 (en) | 2019-05-14 | 2021-02-23 | DynaEnergetics Europe GmbH | Single use setting tool for actuating a tool in a wellbore |
US11578549B2 (en) | 2019-05-14 | 2023-02-14 | DynaEnergetics Europe GmbH | Single use setting tool for actuating a tool in a wellbore |
US11255147B2 (en) | 2019-05-14 | 2022-02-22 | DynaEnergetics Europe GmbH | Single use setting tool for actuating a tool in a wellbore |
US11204224B2 (en) | 2019-05-29 | 2021-12-21 | DynaEnergetics Europe GmbH | Reverse burn power charge for a wellbore tool |
CN114641328A (en) * | 2019-10-30 | 2022-06-17 | 株式会社大赛璐 | Gene gun |
KR102541324B1 (en) * | 2020-11-16 | 2023-06-07 | 주식회사 한화 | Non-toxic retarder composition for detonator and delayed detonator comprising the same |
CN113004106B (en) * | 2021-05-11 | 2022-07-22 | 山东军浩苑环保科技有限公司 | Priming powder and firing cable for electroless cutting and preparation method thereof |
CN113979821A (en) * | 2021-11-01 | 2022-01-28 | 中国船舶重工集团公司第七一八研究所 | High-reliability multistage ignition mode |
CN115141070B (en) * | 2022-07-07 | 2023-04-14 | 西南科技大学 | Nano thermite and preparation method of nano thermite micro self-destruction chip |
US11753889B1 (en) | 2022-07-13 | 2023-09-12 | DynaEnergetics Europe GmbH | Gas driven wireline release tool |
Family Cites Families (25)
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US2185371A (en) * | 1937-06-18 | 1940-01-02 | Du Pont | Delay composition |
GB760360A (en) | 1954-04-23 | 1956-10-31 | Ici Ltd | New and improved delay fuse compositions and delay assemblies including same |
US3062143A (en) * | 1959-11-02 | 1962-11-06 | Armour Res Found | Detonator |
FR1337225A (en) | 1961-11-24 | 1963-09-13 | Schlumberger Prospection | Improvements to detonating cord initiation devices |
FR2242899A5 (en) | 1971-04-01 | 1975-03-28 | Saint Louis Inst Franco | Electrically fired primer-detonator - for direct detonation of secondary brisant explosives |
ZA729100B (en) * | 1972-01-05 | 1974-01-30 | Nitro Nobel Ab | Detonating cap |
US3890174A (en) | 1972-02-18 | 1975-06-17 | Jr Horace H Helms | Pyrotechnic composition |
NO139383C (en) * | 1973-03-20 | 1979-02-28 | Dyno Industrier As | EXPLOSIVE MIXTURE AND MANUFACTURING PROCEDURE |
CA1049783A (en) | 1974-07-11 | 1979-03-06 | Fred Schroeder | Incendiary composition |
US3978791A (en) | 1974-09-16 | 1976-09-07 | Systems, Science And Software | Secondary explosive detonator device |
US4239004A (en) | 1976-07-08 | 1980-12-16 | Systems, Science & Software | Delay detonator device |
US4144814A (en) | 1976-07-08 | 1979-03-20 | Systems, Science And Software | Delay detonator device |
EP0040011B1 (en) * | 1980-05-09 | 1984-08-08 | EMI Limited | Arrangements for igniting a pyrotechnic charge |
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JPS5823110A (en) * | 1981-08-04 | 1983-02-10 | 科学技術庁金属材料技術研究所長 | Method of producing nb3sn superconductive wire material |
FR2534369B1 (en) * | 1982-10-08 | 1987-03-20 | Brandt Francois | PERFORATING EXPLOSIVE PROJECTILE IN CARTRIDGE |
SE462391B (en) | 1984-08-23 | 1990-06-18 | China Met Imp Exp Shougang | SPRAY Capsule and Initiation Element Containing NON-PRIMARY EXPLANATIONS |
US4756250A (en) * | 1985-01-14 | 1988-07-12 | Britanite Industrias Quimicas Ltda. | Non-electric and non-explosive time delay fuse |
SE460848B (en) | 1987-09-29 | 1989-11-27 | Bofors Ab | SET TO MAKE PYROTECHNICAL PRE-DRAWING AND RUNNING KITS |
SE462092B (en) | 1988-10-17 | 1990-05-07 | Nitro Nobel Ab | INITIATIVE ELEMENT FOR PRIMARY EXTENSION FREE EXPLOSION CAPS |
WO1990007689A1 (en) | 1989-01-06 | 1990-07-12 | Explosive Developments Limited | Method and apparatus for detonating explosives |
GB9005473D0 (en) * | 1990-03-12 | 1990-05-09 | Ici Plc | Accessory |
US5088412A (en) * | 1990-07-16 | 1992-02-18 | Networks Electronic Corp. | Electrically-initiated time-delay gas generator cartridge for missiles |
GB9120803D0 (en) * | 1991-10-01 | 1995-03-08 | Secr Defence | Pyrotechnic decoy flare |
SE470537B (en) * | 1992-11-27 | 1994-07-25 | Nitro Nobel Ab | Delay kit and elements and detonator containing such kit |
-
1995
- 1995-12-20 SE SE9504571A patent/SE505912C2/en not_active IP Right Cessation
-
1996
- 1996-12-12 JP JP52270397A patent/JP4098829B2/en not_active Expired - Lifetime
- 1996-12-12 KR KR10-1998-0704846A patent/KR100468638B1/en not_active IP Right Cessation
- 1996-12-12 ES ES96943430T patent/ES2122952T3/en not_active Expired - Lifetime
- 1996-12-12 CA CA002240892A patent/CA2240892C/en not_active Expired - Fee Related
- 1996-12-12 AT AT96943430T patent/ATE200072T1/en not_active IP Right Cessation
- 1996-12-12 PT PT96943430T patent/PT869935E/en unknown
- 1996-12-12 EP EP96943430A patent/EP0869935B1/en not_active Expired - Lifetime
- 1996-12-12 RU RU98113928/02A patent/RU2170224C2/en active
- 1996-12-12 DK DK96943430T patent/DK0869935T3/en active
- 1996-12-12 WO PCT/SE1996/001646 patent/WO1997022571A1/en not_active Application Discontinuation
- 1996-12-12 DE DE0869935T patent/DE869935T1/en active Pending
- 1996-12-12 BR BR9612089A patent/BR9612089A/en not_active IP Right Cessation
- 1996-12-12 UA UA98073915A patent/UA44925C2/en unknown
- 1996-12-12 CZ CZ19981919A patent/CZ292045B6/en not_active IP Right Cessation
- 1996-12-12 DE DE69612300T patent/DE69612300T2/en not_active Expired - Lifetime
- 1996-12-12 US US09/091,342 patent/US6227116B1/en not_active Expired - Fee Related
- 1996-12-12 SK SK860-98A patent/SK86098A3/en unknown
- 1996-12-12 AU AU12165/97A patent/AU699412B2/en not_active Ceased
- 1996-12-12 PL PL96327545A patent/PL185595B1/en not_active IP Right Cessation
- 1996-12-13 ZA ZA9610539A patent/ZA9610539B/en unknown
- 1996-12-18 TW TW085115621A patent/TW419580B/en not_active IP Right Cessation
-
1998
- 1998-06-19 MX MX9804973A patent/MX9804973A/en not_active IP Right Cessation
- 1998-06-19 NO NO19982871A patent/NO310285B1/en not_active IP Right Cessation
-
2001
- 2001-05-31 GR GR20010400828T patent/GR3035977T3/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021234025A1 (en) * | 2020-05-20 | 2021-11-25 | DynaEnergetics Europe GmbH | Low-voltage primary-free detonator |
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